Priority Order

1. Migrate remaining high-volume appendix sections next: llm-intro, api-design, tracking-design, and backend-layered-architecture.
2. For each section, create a section locale folder and keep component arrays in the dictionary instead of hardcoding labels in Vue files.
3. Treat llm-intro as a dedicated migration batch. It contains long teaching copy, code examples, token data, and multi-step animation state, so migrate it component by component rather than as a quick static-array pass.
4. Add real ja-jp, ko-kr, es-es, fr-fr, de-de, ar-sa, vi-vn, and zh-tw dictionaries only after the English fallback is structurally stable.